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ADC & DAC

Bridging the analog and digital worlds: how an ADC quantizes a voltage to an N-bit count (and a DAC reverses it), the count↔voltage math, and why Vref and Nyquist set your limits.

24 min read

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5 interview questions on this topic

Each one opens a full worked answer.

What determines the resolution of an ADC reading in real volts?What is aliasing and how do you prevent it?Why does the reference voltage matter so much for ADC accuracy?Why might an ADC reading be wrong even though the code looks correct?When would you use a DAC, and how does it differ from PWM?

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ADC & DAC | EmbeddedPrep.io